15 inspiring Instagram accounts from around the world

South Sudan: Kathryn Mahoney. Mahoney is an aid worker for the United Nations at the Yida refugee camp in South Sudan, one of the most remote places in the country. For her 100th photo, she wrote: "The Nuban people say that there are 99 peaks, 99 tribes and 99 dialects in their mountains. 99 is a very symbolic number for them. I dedicate the 99 previous pictures I have shared to them, to their resilience, to their strength, and to their humor, to their candor, to their frustration with war and to their anger that they can’t go home — the only thing they want for themselves and for their children."